Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

Baetidae (Blue-Winged Olives) Mayfly Nymph Pictures

 Here's a rather different tiny Baetid nymph. The tails are all unbanded, and the tergites (
One tergite of this Isonychia bicolor mayfly spinner is highlighted in red.
One tergite of this Isonychia bicolor mayfly spinner is highlighted in red.
Tergite: The top (dorsal) part of a single segment on an insect's abdomen when it consists of a single chitinous plate (sclerite), or an individual sclerite if the segment has more than one.
)
all have a dark-colored anterior (Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of.") 2/3 and light-colored posterior (Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of.") 1/3. The gill veinlets (Veinlet: Short insect wing veins connecting the major longitudinal veins to the wing margin.) are indistinct. It's probably a very early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) of some Baetis species.


This mayfly was collected from unknown on January 31st, 2004 and added to Troutnut.com on January 25th, 2006.

Shown Full Size
AddEmail
Baetidae (Blue-Winged Olives) Mayfly Nymph from unknown in Wisconsin
Shown Full Size
AddEmail
Baetidae (Blue-Winged Olives) Mayfly Nymph from unknown in Wisconsin

Start a Discussion of this Nymph:

You must log in at the top of the page to post. If you haven't registered yet, it's this easy:

Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.
Top 10 Fly Hatches
Top Gift Shop Designs
Top Insect Specimens
Miscellaneous Sites